html {
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        linear-gradient(45deg, hsla(340, 100%, 55%, 1) 0%, hsla(340, 100%, 55%, 0) 70%),
        linear-gradient(135deg, hsla(225, 95%, 50%, 1) 10%, hsla(225, 95%, 50%, 0) 80%),
        linear-gradient(225deg, hsla(140, 90%, 50%, 1) 10%, hsla(140, 90%, 50%, 0) 80%),
        linear-gradient(315deg, hsla(35, 95%, 55%, 1) 100%, hsla(35, 95%, 55%, 0) 70%);
}

a {
    text-decoration: none;
    color: black;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 20px;
}

.menu {
    padding: 0;
    display: flex;
    list-style: none;
    justify-content: center;
    margin: 100px 0;
}

.menu a {
    display: inline-block;
    padding: 5px;
    margin: 0 20px;
    color: black;
}

.wrapper {
    margin: 0 auto;
    max-width: 500px;
    font-size: 20px;
    line-height: 2;
}

.highlight {
    transition: all 0.2s;
    border-bottom: 2px solid white;
    position: absolute;
    top: 0;
    background: white;
    left: 0;
    z-index: -1;
    border-radius: 20px;
    display: block;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}